Theoretical approaches to the 3α break-up of 12C

SMITH, Robin, BISHOP, Jack, WHELDON, Carl and KOKALOVA, Tzany (2019). Theoretical approaches to the 3α break-up of 12C. Journal of Physics: Conference Series, 1308 (1), 012021.

Smith_theorectical_approaches_to_the_3a_break-up.pdf - Published Version
Creative Commons Attribution.

Download (3MB) | Preview
Official URL:
Open Access URL: (Published)
Link to published version::
Related URLs:


    Abstract Two recent experiments have indicated that the break-up of the 12C Hoyle state is dominated by the sequential 8Be(g.s.) + α decay channel. The rare direct 3α decay was found to contribute with a branching ratio of less than 0.047% (95% C.L.). However, the ability of experimentalists to successfully disentangle these two competing decay channels relies on accurate theoretical predictions of how they each manifest in phase space distribution of the three break-up α-particles. The following paper reviews the current theoretical approaches to calculating the break-up of the Hoyle state and introduces a semi-classical WKB approach, which adequately reproduces the results of more sophisticated calculations. It is proposed that a more accurate upper limit on this branching ratio may be obtained if these new theoretical results are taken into account when analysing experimental data.

    Item Type: Article
    Additional Information: ** From IOP Publishing via Jisc Publications Router ** Licence for this article: **Journal IDs: pissn 1742-6588; eissn 1742-6596 **Article IDs: publisher-id: jpcs_1308_1_012021; manuscript: j13081021 **History: open-access 01-08-2019; published 08-2019
    Uncontrolled Keywords: Paper
    Identification Number:
    Page Range: 012021
    SWORD Depositor: Helen Garner
    Depositing User: Helen Garner
    Date Deposited: 07 Oct 2019 13:24
    Last Modified: 18 Mar 2021 03:27

    Actions (login required)

    View Item View Item


    Downloads per month over past year

    View more statistics